twin wall polycarbonate sheet 1. 100% virgin Bayer material 2. UV protective layer coated 3. Heat insulation Colored lexan twin-wall polycarbonate sheet Specification: 1) Thickness: 4/5/6/8/10mm (twin-wall structure)2) Standard Width x length: 2,100 x 6,000mm3) Weight: 0.85/1/1.3/1.5/1.7kg/m24) Colors: blue, transparent, opal, green, bronze,etc.5) Light transmission: 70%--80%6) One side or two ...